var ccErrorNo = 0;
var ccErrors = new Array();
ccErrors[0] = "Unknown card type";
ccErrors[1] = "No card number provided";
ccErrors[2] = "Credit card number is in invalid format";
ccErrors[3] = "Credit card number is invalid";
ccErrors[4] = "Credit card number has an inappropriate number of digits";
function checkCreditCard(cardnumber, cardname) {
	
	// Array to hold the permitted card characteristics
    var cards = new Array();

  // Define the cards we support. You may add addtional card types.
  //  Name:      As in the selection box of the form - must be same as user's
  //  Length:    List of possible valid lengths of the card number for the card
  //  prefixes:  List of possible prefixes for the card
  //  checkdigit Boolean to say whether there is a check digit
    cards[0] = {name:"Visa", code:"1", length:"13,16", prefixes:"4", checkdigit:true};
    cards[1] = {name:"MasterCard", code:"2", length:"16", prefixes:"51,52,53,54,55", checkdigit:true};
    cards[2] = {name:"DinersClub", code:"4", length:"14,", prefixes:"300,301,302,303,304,305,36,38", checkdigit:true};
    cards[3] = {name:"CarteBlanche", code:"5", length:"14", prefixes:"300,301,302,303,304,305,36,38", checkdigit:true};
    cards[4] = {name:"AmEx", code:"3", length:"15", prefixes:"34,37", checkdigit:true};
    cards[5] = {name:"Discover", code:"6", length:"16", prefixes:"6011", checkdigit:true};
    cards[6] = {name:"JCB", code:"7", length:"15,16", prefixes:"3,1800,2131", checkdigit:true};
    cards[7] = {name:"Enroute", code:"8", length:"15", prefixes:"2014,2149", checkdigit:true};
	     
  // Establish card type
    var cardType = -1;
    for (var i = 0; i < cards.length; i++) {

    // See if it is this card (ignoring the case of the string)
        if (cardname == cards[i].code) {
            cardType = i;
            break;
        }
    }
  
  // If card type not found, report an error
    if (cardType == -1) {
        ccErrorNo = 0;
        return false;
    }
   
  // Ensure that the user has provided a credit card number
    if (cardnumber.length == 0) {
        ccErrorNo = 1;
     //alert (ccErrors(ccErrorNo));
        return false;
    }
  // Check that the number is numeric, although we do permit a space to occur
  // every four digits. 
    var cardNo = cardnumber;
    var cardexp = /^([0-9]{4})\s?([0-9]{4})\s?([0-9]{4})\s?([0-9]{1,4})$/;
    if (!cardexp.exec(cardNo)) {
        ccErrorNo = 2;
        return false;
    }
    
  // Now remove any spaces from the credit card number
    cardexp.exec(cardNo);
    cardNo = RegExp.$1 + RegExp.$2 + RegExp.$3 + RegExp.$4;
       
  // Now check the modulus 10 check digit - if required
    if (cards[cardType].checkdigit) {
        var checksum = 0;                                  // running checksum total
        var mychar = "";                                   // next char to process
        var j = 1;                                         // takes value of 1 or 2
  
    // Process each digit one by one starting at the right
        var calc;
        for (i = cardNo.length - 1; i >= 0; i--) {
    
      // Extract the next digit and multiply by 1 or 2 on alternative digits.
            calc = Number(cardNo.charAt(i)) * j;
    
      // If the result is in two digits add 1 to the checksum total
            if (calc > 9) {
                checksum = checksum + 1;
                calc = calc - 10;
            }
    
      // Add the units element to the checksum total
            checksum = checksum + calc;
    
      // Switch the value of j
            if (j == 1) {
                j = 2;
            } else {
                j = 1;
            }
        } 
  
    // All done - if checksum is divisible by 10, it is a valid modulus 10.
    // If not, report an error.
        if (checksum % 10 != 0) {
            ccErrorNo = 3;
			//alert (ccErrors(ccErrorNo));
            return false;
        }
    }  

  // The following are the card-specific checks we undertake.
    var LengthValid = false;
    var PrefixValid = false;
    var undefined; 

  // We use these for holding the valid lengths and prefixes of a card type
    var prefix = new Array();
    var lengths = new Array();
    
  // Load an array with the valid prefixes for this card
    prefix = cards[cardType].prefixes.split(",");
      
  // Now see if any of them match what we have in the card number
    for (i = 0; i < prefix.length; i++) {
        var exp = new RegExp("^" + prefix[i]);
        if (exp.test(cardNo)) {
            PrefixValid = true;
        }
    }
      
  // If it isn't a valid prefix there's no point at looking at the length
    if (!PrefixValid) {
        ccErrorNo = 3;
	//alert (ccErrors(ccErrorNo));
        return false;
    }
    
  // See if the length is valid for this card
    lengths = cards[cardType].length.split(",");
    for (j = 0; j < lengths.length; j++) {
        if (cardNo.length == lengths[j]) {
            LengthValid = true;
        }
    }
  
  // See if all is OK by seeing if the length was valid. We only check the
  // length if all else was hunky dory.
    if (!LengthValid) {
        ccErrorNo = 4;
     //alert (ccErrors(ccErrorNo));
        return false;
    }
  // The credit card is in the required format.
    return true;
}
function checkvarificationNumber(myvarificationNumber) {
    myvarificationNumber = trim(myvarificationNumber);
    myvarificationNumber = myvarificationNumber.replace(/(^ +| +$)/, "");
    if (myvarificationNumber.value == "") {
        return false;
    } else {
        if (myvarificationNumber.length < 3) {
            return false;
        } else {
            if (!isNumeric(myvarificationNumber)) {
                return false;
            }
        }
    }
    return true;
}
function expiryDate(month, yearString) {
    var checkDate = new Date();
    var today = new Date();
    var testDate = new Date();
    testDate.setMonth(today.getMonth());
    checkDate.setFullYear((yearString), month - 1, 1);
    if (checkDate < today) {
        return false;
    } else {
        if (checkDate < testDate) {
            return false;
        } else {
            return true;
        }
    }
}
function getDateObject(dateString, dateSeperator) {
	//This function return a date object after accepting
	//a date string ans dateseparator as arguments
    var curValue = dateString;
    var sepChar = dateSeperator;
    var curPos = 0;
    var cDate, cMonth, cYear;

	//extract day portion
    curPos = dateString.indexOf(sepChar);
    cDate = dateString.substring(0, curPos);
	
	//extract month portion				
    endPos = dateString.indexOf(sepChar, curPos + 1);
    cMonth = dateString.substring(curPos + 1, endPos);

	//extract year portion				
    curPos = endPos;
    endPos = curPos + 5;
    cYear = curValue.substring(curPos + 1, endPos);
	
	//Create Date Object
    dtObject = new Date(cYear, cMonth - 1, cDate);
    return dtObject;
}
function isNumeric(sText) {
    var ValidChars = "0123456789";
    var IsNumber = true;
    var Char;
    if (trim(sText) === "") {
        IsNumber = 0;
    } else {
        for (i = 0; i < trim(sText).length && IsNumber === true; i++) {
            Char = trim(sText).charAt(i);
            if (ValidChars.indexOf(Char) == -1) {
                IsNumber = 1;
            }
        }
    }
    return IsNumber;
}
function isNumericNumber(sText) {
    var ValidChars = "0123456789.";
    var IsNumber = true;
    var Char;
    if (trim(sText) === "") {
        IsNumber = 0;
    } else {
        for (i = 0; i < sText.length && IsNumber === true; i++) {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) == -1) {
                IsNumber = 1;
            }
        }
    }
    return IsNumber;
}
function isNumbers(sText) {
    var ValidChars = "0123456789.-";
    var IsNumber = true;
    var Char;
    if (trim(sText) === "") {
        IsNumber = 0;
    } else {
        for (i = 0; i < sText.length && IsNumber === true; i++) {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) === -1) {
                IsNumber = false;
            }
        }
    }
    return IsNumber;
}
function isCharacter(sText) {
    var ValidChars = "0123456789";
    var IsNumber = true;
    var Char;
    if (trim(sText) === "") {
        IsNumber = 0;
    } else {
        for (i = 0; i < sText.length && IsNumber === true; i++) {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) != -1) {
                IsNumber = 1;
            }
        }
    }
    return IsNumber;
}
function isChar(sText) {
    var ValidChars = "0123456789";
    var IsNumber = 0;
    var Char;
    if (trim(sText) === "") {
        IsNumber = 0;
    } else {
        var flag = false;
        for (i = 0; i < sText.length; i++) {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) != -1) {
                IsNumber = 1;
                flag = true;
            } else {
                IsNumber = 0;
                break;
            }
        }
    }
    return IsNumber;
}
function isEmail(str) {
    var at = "@";
    var dot = ".";
    var lat = str.indexOf(at);
    var lstr = str.length;
    var ldot = str.indexOf(dot);
    if (str === "") {
        return 0;
    }
    if (str.indexOf("-") === 0) {
        return 1;
    }
    if (str.indexOf(at) === -1) {
        return 1;
    }
    if (str.indexOf(at) === -1 || str.indexOf(at) === 0 || str.indexOf(at) === lstr) {
        return 1;
    }
    if (str.indexOf(dot) === -1 || str.indexOf(dot) === 0 || str.indexOf(dot) === lstr) {
        return 1;
    }
    if (str.indexOf(at, (lat + 1)) !== -1) {
        return 1;
    }
    if (str.substring(lat - 1, lat) === dot || str.substring(lat + 1, lat + 2) === dot) {
        return 1;
    }
    if (str.indexOf(dot, (lat + 2)) === -1) {
        return 1;
    }
    if (str.indexOf(" ") !== -1) {
        return 1;
    }
    if (str.substring(ldot + 1, str.length) == "") {
        return 1;
    }
    return 2;
}
function isEmpty(str) {
    if (trim(str) == "") {
        return true;
    } else {
        return false;
    }
}
function isUrl(url) {
    if (isEmpty(url)) {
        return 0;
    } else {
        var RegExp = /^((ht|f)tps?:\/\/|www)[a-z0-9-\.]+\.[a-z]{2,4}\/?([^\s<>\#%\,\{\}\\|\\\^\[\]`]+)?$/;
        if (RegExp.test(trim(url))) {
            return 2;
        } else {
            return 1;
        }
    }
}
function CheckAll(chk) {
    var elem = chk.form.elements;
    for (var i = 0; i < elem.length; i++) {
        if (elem[i].type == "checkbox") {
            elem[i].checked = chk.checked;
        }
    }
}
function checkGeneral(strng) {
    var error = "";
    if (!CheckSplChar(strng)) {
        return 2;
    }
    var illegalChars = /\W/;
    var re = /null/ig;
    if (trim(strng) === "") {
        return 0;
    } else {
        if (strng.match(re)) {
            return 1;
        } else {
            var num = isNumeric(strng);
            if (num !== 1) {
                return 2;
            } else {
                return true;
            }
        }
    }
}
function checkNull(strng) {
    var error = "";
    var illegalChars = /\W/;
    var re = /null/ig;
    if (trim(strng) === "") {
        return 0;
    } else {
        if (strng.match(re)) {
            return 1;
        } else {
            return true;
        }
    }
}
function isValidUrl(url) {
    if (fnIsEmptyTextBox(url)) {
        return 1;
    } else {
        var RegExp = /^((ht|f)tps?:\/\/|www)[a-z0-9-\.]+\.[a-z]{2,4}\/?([^\s<>\#%\,\{\}\\|\\\^\[\]`]+)?$/;
        if (RegExp.test(url.value)) {
            return 2;
        } else {
            return 0;
        }
    }
}
function fnIsEmptyTextBox(thiselement) {
    while (((thiselement.value).substring(0, 1)) == " ") {
        thiselement.value = (thiselement.value).substring(1, (thiselement.value).length);
    }
    if (trim(thiselement.value) == "") {
        return true;
    } else {
        return false;
    }
}
function checkFirstName(strng) {
    var error = "";
    var illegalChars = /\W/;
    var re = /null/ig;
    if (trim(strng) === "") {
        return 0;
    } else {
        var num = isNumeric(strng.charAt(0));
        if (trim(strng).charAt(0).match(illegalChars)) {
            return 1;
        }
        if (num !== 1) {
            return 1;
        } else {
            if (strng.replace(/^\s+|\s+$/g, "").length < 1) {
                return 2;
            } else {
                if (strng.match(re)) {
                    return 3;
                } else {
                    if (strng.match(illegalChars)) {
                        return 4;
                    } else {
                        return true;
                    }
                }
            }
        }
    }
}
function isDecimal(sText) {
    var ValidChars = "0123456789.";
    var IsNumber = true;
    var Char;
    var count = 0;
    if (!CheckSplCharcters(sText)) {
        IsNumber = 5;
    }
    if (trim(sText) === "") {
        IsNumber = 0;
    } else {
        for (i = 0; i < sText.length && IsNumber === true; i++) {
            Char = trim(sText).charAt(i);
            if (ValidChars.indexOf(Char) == -1 || ValidChars.indexOf(Char) === ".") {
                IsNumber = 1;
            }
            if (Char === ".") {
                count++;
            }
        }
        if (count > 1) {
            IsNumber = 1;
        }
    }
    if (IsNumber) {
        if (sText > 100) {
            IsNumber = 2;
        }
    }
    if (IsNumber) {
        if (sText < 1) {
            IsNumber = 3;
        }
    }
    if (IsNumber) {
        if (sText < 0) {
            IsNumber = 4;
        }
    }
    return IsNumber;
}


// Removes Leading whitespaces
function LTrim(value) {
    var re = /\s*((\S+\s*)*)/;
    return value.replace(re, "$1");
}

// Removes ending whitespaces
function RTrim(value) {
    var re = /((\s*\S+)*)\s*/;
    return value.replace(re, "$1");
}

// Removes leading and ending whitespaces
function trim(value) {
    return LTrim(RTrim(value));
}
function checkName(strng) {
    var error = "";
    var illegalChars = /\W/;
    var re = /null/ig;
    if (trim(strng) === "") {
        return 0;
    } else {
        var num = isNumeric(strng.charAt(0));
        if (num !== 1) {
            return 1;
        } else {
            if (strng.length < 6) {
                return 2;
            } else {
                if (strng.match(re)) {
                    return 3;
                } else {
                    if (strng.match(illegalChars)) {
                        return 4;
                    } else {
                        return true;
                    }
                }
            }
        }
    }
}
function checkUserName(strng) {
    var error = "";
    var illegalChars = /[\W_]/;
    var re = /null/ig;
    if (trim(strng) === "") {
        return 0;
    } else {
        var num = isNumeric(strng.charAt(0));
        if (num !== 1) {
            return 1;
        } else {
            if (strng.length < 6) {
                return 2;
            } else {
                if (strng.match(re)) {
                    return 3;
                } else {
                    return true;
                }
            }
        }
    }
}
function checkDomain(nname) {
    var arr = new Array(".com", ".net", ".org", ".biz", ".coop", ".info", ".museum", ".name", ".pro", ".edu", ".gov", ".int", ".mil", ".ac", ".ad", ".ae", ".af", ".ag", ".ai", ".al", ".am", ".an", ".ao", ".aq", ".ar", ".as", ".at", ".au", ".aw", ".az", ".ba", ".bb", ".bd", ".be", ".bf", ".bg", ".bh", ".bi", ".bj", ".bm", ".bn", ".bo", ".br", ".bs", ".bt", ".bv", ".bw", ".by", ".bz", ".ca", ".cc", ".cd", ".cf", ".cg", ".ch", ".ci", ".ck", ".cl", ".cm", ".cn", ".co", ".cr", ".cu", ".cv", ".cx", ".cy", ".cz", ".de", ".dj", ".dk", ".dm", ".do", ".dz", ".ec", ".ee", ".eg", ".eh", ".er", ".es", ".et", ".fi", ".fj", ".fk", ".fm", ".fo", ".fr", ".ga", ".gd", ".ge", ".gf", ".gg", ".gh", ".gi", ".gl", ".gm", ".gn", ".gp", ".gq", ".gr", ".gs", ".gt", ".gu", ".gv", ".gy", ".hk", ".hm", ".hn", ".hr", ".ht", ".hu", ".id", ".ie", ".il", ".im", ".in", ".io", ".iq", ".ir", ".is", ".it", ".je", ".jm", ".jo", ".jp", ".ke", ".kg", ".kh", ".ki", ".km", ".kn", ".kp", ".kr", ".kw", ".ky", ".kz", ".la", ".lb", ".lc", ".li", ".lk", ".lr", ".ls", ".lt", ".lu", ".lv", ".ly", ".ma", ".mc", ".md", ".mg", ".mh", ".mk", ".ml", ".mm", ".mn", ".mo", ".mp", ".mq", ".mr", ".ms", ".mt", ".mu", ".mv", ".mw", ".mx", ".my", ".mz", ".na", ".nc", ".ne", ".nf", ".ng", ".ni", ".nl", ".no", ".np", ".nr", ".nu", ".nz", ".om", ".pa", ".pe", ".pf", ".pg", ".ph", ".pk", ".pl", ".pm", ".pn", ".pr", ".ps", ".pt", ".pw", ".py", ".qa", ".re", ".ro", ".rw", ".ru", ".sa", ".sb", ".sc", ".sd", ".se", ".sg", ".sh", ".si", ".sj", ".sk", ".sl", ".sm", ".sn", ".so", ".sr", ".st", ".sv", ".sy", ".sz", ".tc", ".td", ".tf", ".tg", ".th", ".tj", ".tk", ".tm", ".tn", ".to", ".tp", ".tr", ".tt", ".tv", ".tw", ".tz", ".ua", ".ug", ".uk", ".um", ".us", ".uy", ".uz", ".va", ".vc", ".ve", ".vg", ".vi", ".vn", ".vu", ".ws", ".wf", ".ye", ".yt", ".yu", ".za", ".zm", ".zw");
    var mai = trim(nname);
    var val = true;
    var dot = mai.lastIndexOf(".");
    var dname = mai.substring(0, dot);
    var ext = mai.substring(dot, mai.length);
    if (nname.indexOf("/") != -1) {
        return 3;
    }
    if (dot > 2 && dot < 57) {
        for (var i = 0; i < arr.length; i++) {
            if (ext == arr[i]) {
                val = true;
                break;
            } else {
                val = false;
            }
        }
        if (nname.substring(0, 4) == "wwww") {
            return 1;
        }
        if (val == false) {
           // alert("Your domain extension " + ext + " is not correct");
            return 1;
        } else {
            for (var j = 0; j < dname.length; j++) {
                var dh = dname.charAt(j);
                var hh = dh.charCodeAt(0);
                if ((hh > 47 && hh < 59) || (hh > 64 && hh < 91) || (hh > 96 && hh < 123) || hh == 45 || hh == 46) {
                    if ((j == 0 || j == dname.length - 1) && hh == 45) {
                       // alert("Domain name should not begin are end with '-'");
                        return 2;
                    }
                } else {
                   // alert("Your domain name should not have special characters");
                    return 3;
                }
            }
        }
    } else {
        //alert("Your Domain name is too short/long");
        return 0;
    }
    return true;
}
function isPassword(fld) {
    var illegalChars = /[\W_]/; // allow only letters and numbers 
    var pass = trim(fld.value);
    if (pass == "") {
        return 0;
    } else {
        if ((pass.length < 8) || (pass.length > 16)) {
            return 1;
        } else {
            if (illegalChars.test(pass)) {
                return 2;
            } else {
                return 4;
                /* var lowercase = "abcdefghijklmnopqrstuvwxyz"; 
                var numbers = "0123456789"; 
                if (!(containsCheck(pass, lowercase) && containsCheck(pass, numbers))) {
                    return 3;
                } else {
                    return 4;
                }*/
            }
        }
    }
}
function containsCheck(password, validChars) {
    for (var i = 0; i < password.length; i++) {
        var charac = password.charAt(i);
        if (validChars.indexOf(charac) > -1) {
            return true;
        }
    }
    return false;
}
function validateExcel(thiselement) {
    var strFile = trim(thiselement.value);
    var len = strFile.length;
    if (len == 0) {
        return 0;
    } else {
        if (((strFile.substr(len - 3, len)).toUpperCase() != "XLS") && ((strFile.substr(len - 3, len)).toUpperCase() != "CSV")) {
            return 1;
        } else {
            if (!(CheckSplChar(thiselement))) {
                return 2;
            }
        }
    }
}
function validateImgPdf(thiselement) {
    var strFile = trim(thiselement.value);
    var len = strFile.length;
    if (len == 0) {
        return 0;
    } else {
        if (((strFile.substr(len - 3, len)).toUpperCase() != "JPG") && ((strFile.substr(len - 3, len)).toUpperCase() != "JPEG") && ((strFile.substr(len - 3, len)).toUpperCase() != "PDF") && ((strFile.substr(len - 3, len)).toUpperCase() != "GIF")) {
            return 1;
        } else {
            if (!(CheckSplChar(thiselement))) {
                return 2;
            }
        }
    }
}
function CheckSplChar(thiselement) {
    var iChars = "!@$%^&*()+=-[]';,./{}|\":<>?#";
    for (var i = 0; i < thiselement.length; i++) {
        if (iChars.indexOf(thiselement.charAt(i)) != -1) {
            return false;
        }
    }
    return true;
}
function CheckSplCharcter(thiselement) {
    var iChars = "!@$%^&*()+=[]';,/{}|\\\":<>?#~`";
    for (var i = 0; i < thiselement.length; i++) {
        if (iChars.indexOf(thiselement.charAt(i)) != -1) {
            return false;
        }
    }
    return true;
}
function CheckSplCharcters(thiselement) {
    var iChars = "!@$%^&*()+=-[]';/{}|\":<>?";
    for (var i = 0; i < thiselement.length; i++) {
        if (iChars.indexOf(thiselement.charAt(i)) != -1) {
            return false;
        }
    }
    return true;
}
function changeCharacter(element) {
    for (var i = 0; i < element.length; i++) {
        if (element.charAt(i).indexOf("#") != -1) {
            element = element.replace("#", "^@@");
        }
        if (element.charAt(i).indexOf("%") != -1) {
            element = element.replace("%", "^**");
        }
        if (element.charAt(i).indexOf("&") != -1) {
            element = element.replace("&", "@**");
        }
        if (element.charAt(i).indexOf("+") != -1) {
            element = element.replace("+", "%%@");
        }
    }
    return element;
}
function changeValue(element) {
    for (var i = 0; i < element.length; i++) {
        if (element.indexOf("@!@") != -1) {
            element = element.replace("@!@", "'");
        }
    }
    return element;
}
function getFormValues(fobj) {
    var str = "";
    var valueArr = null;
    var val = "";
    var cmd = "";
    for (var i = 0; i < fobj.elements.length; i++) {
        switch (fobj.elements[i].type) {
          case "text":
            str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&";
            break;
          case "hidden":
            str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&";
            break;
          case "select-one":
            str += fobj.elements[i].name + "=" + fobj.elements[i].options[fobj.elements[i].selectedIndex].value + "&";
            break;
          case "select-multiple":
            var arSelected = new Array();
            for (var j = 0; j < fobj.elements[i].options.length; j++) {
                if (fobj.elements[i].options[j].selected) {
                    arSelected.push(fobj.elements[i].options[j].value);
                }
            }
            str += fobj.elements[i].name + "=" + arSelected + "&";
            break;
          case "radio":
            if (fobj.elements[i].checked) {
                str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&";
            }
            break;
          case "checkbox":
              if (fobj.elements[i].checked) {
                  str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&";
              }
              break;
        }
    }
    str = str.substr(0, (str.length - 1));
    return str;
}
function disableEnterKey(e)
{
     var key;     
     if(window.event)
          key = window.event.keyCode; //IE
     else
          key = e.which; //firefox     
     return (key != 13);
}